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<h1 id="slrStationGeneratorType">SlrStationGenerator</h1><p>
Definition and basic information of SLR ground stations.</p><p>See also <a class="groops-program" href="SlrProcessing.html">SlrProcessing</a>.
</p>

<h2 id="stations">Stations</h2><p>
A list of station names must be provided via <a class="groops-class" href="fileFormat_stringList.html">inputfileStationList</a>.
It defines the variable <code>{station}</code> for the station specific input files.
The <a class="groops-class" href="fileFormat_platform.html">inputfileStationInfo</a> contains metadata information like station number,
station name and approximate station postion in terrestrial reference frame (TRF)
considering the station eccentricities. They can be created via <a class="groops-program" href="SinexEccentricties2SlrPlatform.html">SinexEccentricties2SlrPlatform</a>
or <a class="groops-program" href="PlatformCreate.html">PlatformCreate</a>. The <a class="groops-class" href="fileFormat_instrument.html">inputfileObservations</a> are separate files
for each <code>{station}</code>-<code>{satellite}</code> pair. They can be converted from CRD
format via <a class="groops-program" href="Crd2NormalPoints.html">Crd2NormalPoints</a>, CSTG format via <a class="groops-program" href="Cstg2NormalPoints.html">Cstg2NormalPoints</a>
and MERIT II format via <a class="groops-program" href="Merit2NormalPoints.html">Merit2NormalPoints</a> and <a class="groops-program" href="Merit2FullRate.html">Merit2FullRate</a>.</p><p>The apriori observation weighting is defined by the expression <strong class="groops-config-element">accuracy</strong> in $[m]$.
The following variables are defined for each observation from the
<a class="groops-class" href="fileFormat_instrument.html">inputfileObservations</a>: <code>{residual}</code>, <code>{accuracy}</code>,
<code>{redundancy}</code>, <code>{laserWavelength}</code>, <code>{azimut}</code>, <code>{elevation}</code>.
Observations with non-positive accuracies are removed.
This can be used for a rough outlier removal by an expression such as
<strong class="groops-config-element">accuracy</strong> = <code>if(abs(residual)>30, NAN, accuracy)</code>.</p><p>The effects of loading and tidal deformation on station positions can be corrected for
via <a class="groops-class" href="gravityfieldType.html">loadingDisplacement</a> and
<a class="groops-class" href="tidesType.html">tidalDisplacement</a>, respectively.
Tidal deformations typically include:
<ul>

  <li><a class="groops-class" href="tidesType.html#earthTide">earthTide</a>: Earth tidal deformations (IERS conventions)
  </li><li>
<a class="groops-class" href="tidesType.html#doodsonHarmonicTide">doodsonHarmonicTide</a>: ocean tidal deformations
        (e.g. fes2014b_n720, <strong class="groops-config-element">minDegree</strong>=<code>1</code>)
  </li><li>
<a class="groops-class" href="tidesType.html#doodsonHarmonicTide">doodsonHarmonicTide</a>: atmospheric tidal deformation
        (e.g. AOD1B RL06, <strong class="groops-config-element">minDegree</strong>=<code>1</code>)
  </li><li>
<a class="groops-class" href="tidesType.html#poleTide">poleTide</a>: pole tidal deformations (IERS conventions)
  </li><li>
<a class="groops-class" href="tidesType.html#oceanPoleTide">poleOceanTide</a>: ocean pole tidal deformations (IERS conventions)
</li></ul>

</p>
<table class="table table-hover">
<tr class="table-primary"><th>Name</th><th>Type</th><th>Annotation</th></tr>
<tr class="table-light"><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config mustset">inputfileStationList</div></div></td><td>filename</td><td>ascii file with station names</td></tr>
<tr class=""><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config mustset">inputfileStationInfo</div></div></td><td>filename</td><td>station metadata</td></tr>
<tr class="table-light"><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config optional">inputfileStationPosition</div></div></td><td>filename</td><td>station position</td></tr>
<tr class=""><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config optional">disableStationWithoutPosition</div></div></td><td>boolean</td><td>drop stations without apriori position</td></tr>
<tr class="table-light"><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config optional">inputfileObservations</div></div></td><td>filename</td><td>variable {station} {satellite} available</td></tr>
<tr class=""><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config mustset">accuracy</div></div></td><td>expression</td><td>[m] used for weighting, variables: {residual}, {accuracy}, {redundancy}, {laserWavelength}, {azimut}, {elevation}</td></tr>
<tr class="table-light"><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config optional-unbounded">loadingDisplacement</div></div></td><td><a href="gravityfieldType.html">gravityfield</a></td><td>loading deformation</td></tr>
<tr class=""><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config optional-unbounded">tidalDisplacement</div></div></td><td><a href="tidesType.html">tides</a></td><td>tidal deformation</td></tr>
<tr class="table-light"><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config optional">ephemerides</div></div></td><td><a href="ephemeridesType.html">ephemerides</a></td><td>for tidal deformation</td></tr>
<tr class=""><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config mustset">inputfileDeformationLoadLoveNumber</div></div></td><td>filename</td><td></td></tr>
<tr class="table-light"><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config optional">inputfilePotentialLoadLoveNumber</div></div></td><td>filename</td><td>if full potential is given and not only loading potential</td></tr>
<tr class=""><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config optional">elevationCutOff</div></div></td><td>angle</td><td>[degree] ignore observations below cutoff</td></tr>
<tr class="table-light"><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config optional">interpolationDegree</div></div></td><td>uint</td><td>for position interpolation</td></tr>
</table>

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